The Economist Style Guide, the bible for most copy-editors, has this to say about cliches and metaphors:
"Every issue of The Economist contains scores of metaphors... Some of these are tired, and will therefore tire the reader. Most are so exhausted that they may be considered dead... But use all metaphors, dead or alive, sparingly, otherwise you will make trouble for yourself."
One of the Economist's editors obviously hates metaphors and cliches with a passion. That passion has resulted in one of the cleverest little pieces I've ever read in the 'newspaper'.